Brake control conduit



Patented July 7, 1936 BRAKE CONTROL commu" Alan E. Brakman and George A. Gleason, worcester, Mass., assignors to The American Steel and Wire Company of New Jersey, a.l corporation oi New Jersey Application November 18, 19,35, Serial No. 50,458

s claims.

tion of the flexible conduit before the end fitting is applied to the same.

Figure 2 `is a sectional view showing the end fitting applied to the conduit. Figure 3 is an elevation showing the conduit with its end fitting assembled and ready for use.

More speciilcally, the drawing shows a tube I made of a dense rubber compound. This tube I is circumferentialiy corrugated at Ib so as to provide a series of circumferential recesses spaced from its end. Wire 2 is coiled concentrically inside of the tube I so as to provide a metallic surface for carrying a brake control cable. This wire is formed into a completely closed coil so as to provide a more nearly continuous surface.

An end tting 3 is die cast about the outside of the tube I into the recesses provided by the corrugations Ib. It has been found that this may be done without affecting the chemical or physical character of the rubber compound from which the tube I is made in any manner, the tube being therefore 0i substantially the same character throughout, including the part about which the end fitting 3 is die cast. Furthermore, as the end iltting 3 cools after being die cast it shrinks, so as to constrict the tube and compress it between the end fitting and the coiledwire 2, ,the latter providing a relatively rigid wall 4 which resists the constricting action involved.

The end iltting 3 will be die cast in a form suitable for the make oi car to which the conduit is to be applied. Hence, the Iorm in which it is illustrated is relatively immaterial except- This invention relates to nexibie conduits ing that it must be so die cast as to cover the corrugated portion of the tube I, and preferably so as to extend a suiilciently great distance along the tubes outside to provide the strength required. y 5

Although a speciilc example of the present invention has been disclosed in accordance with the patent statutes, it is to be understood that its scope is not to be limited exactly thereto, except as defined by the following claims. i0

We claim:

1. A cable conduit including the combination of a rubber compound tube, wire coiled inside of said tube for carrying a cable, the outside of said tube being provided with a plurality of circuml5 `ferential recesses adjacent its end, and an end tting die cast about the outside of said tube and into said recesses.

2. A cable conduit including the combination of a rubber compound tube, wire coiled inside 20 of said tube for carrying a cable, the outside of said tubebeing provided with a plurality of circumferential recesses adjacent its end, and an endfitting die cast about the outside of said tube and into said recesses, said tube being of 25 substantially the same. character throughout including the part about which said end tting is die cast.

3. A cable conduit including the combination o! a rubber compound tube, wire coiled inside of 3 said tube for carrying a cable, the outside of said tube being provided with a plurality o! circumferential recesses adjacent its end,iand an end fitting die cast about the loutside of said tube 35 and into said recesses, said tube beingl of substantially the same character throughout including the part about which said end iltting is die cast. and being constricted by -said end tting so as td be compressed between the lattervand 40 said wire.

ALAN E. BRICKMAN. GEORGE A; GLEASON. 

